Safety relief device for chemical production

Abstract

The utility model relates to the technical field of chemical production, and discloses a chemical production safety relief device which comprises a top cover, a pressure control mechanism is arranged in the top cover, a discharge mechanism is arranged at the bottom of the pressure control mechanism, the pressure control mechanism comprises a controller, the bottom of the controller is fixedly connected to the top of the top cover, and the discharge mechanism is arranged at the bottom of the controller. The output end of the controller is fixedly connected with a wheel disc, the bottom of the wheel disc is fixedly connected with a threaded rod, the outer portion of the threaded rod is in threaded connection with the interior of the top cover, the bottom of the threaded rod is fixedly connected with a limiting block, and the inner side of the top cover is fixedly connected with a supporting column. According to the utility model, the controller drives the wheel disc to rotate, so that the push rod motor on the valve body is driven to slide in the sliding rod, and the sliding rod is controlled to slide and be locked in the supporting column, so that the valve is automatically driven to open when the air pressure in the tank body is reduced, and the storage tank body is prevented from being damaged due to too low air pressure.

Description

Technical Field

[0001] This utility model relates to the field of chemical production technology, and in particular to a safety relief device for chemical production. Background Technology

[0002] Chemical production, or chemical industrial production, refers to the process of transforming raw materials into valuable chemical products through a series of physical and chemical operations using the principles of chemical reactions. Chemical production is complex and diverse, often requiring extreme and continuous conditions such as high temperature and high pressure, and involves many risks. In the field of chemical production, safety relief devices play a crucial role in ensuring production safety. With the rapid development of the chemical industry, the production processes of various chemical products involve many complex chemical reactions and material storage links, making pressure control in the production process extremely critical.

[0003] Currently, some existing chemical production safety relief devices on the market consist of exhaust pipes and valves. When the internal gas pressure of the tank tends to rise and threatens the safety of the equipment, it is necessary to manually control the valves to open the channel so that the gas can be discharged through the preset exhaust pipe, thereby reducing the internal pressure and ensuring the safe operation of the equipment.

[0004] In the existing technology, some devices have obvious shortcomings in dealing with changes in the internal air pressure of the storage tube. When the internal air pressure drops abnormally, such devices lack an effective reverse pressure compensation mechanism. The control valve cannot prevent the air pressure from continuing to drop, and the exhaust pipe cannot play a role in increasing the air pressure. As a result, the storage tube is easily damaged due to the pressure difference between the inside and outside. Therefore, a chemical production safety relief device is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above deficiencies, this utility model provides a safety relief device for chemical production, which aims to improve the problem that the storage tank is damaged when the internal air pressure of some devices in the prior art is too low.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a safety relief device for chemical production, comprising a top cover, a pressure control mechanism disposed inside the top cover, a discharge mechanism disposed at the bottom of the pressure control mechanism, the pressure control mechanism comprising a controller, the bottom of the controller being fixedly connected to the top of the top cover, a wheel being fixedly connected to the output end of the controller, a threaded rod being fixedly connected to the bottom of the wheel, the external thread of the threaded rod being threadedly connected to the inside of the top cover, a limiting block being fixedly connected to the bottom of the threaded rod, a support column being fixedly connected to the inner side of the top cover, a sliding rod being slidably connected inside the support column, a sealing plate being fixedly connected to the bottom of the sliding rod, a spring being sleeved on the outside of the sliding rod, and an air intake assembly being fixedly connected to the inner side of the top cover;

[0007] As a further description of the above technical solution: the air intake assembly includes an air intake support frame, the top of the air intake support frame is fixedly connected to the inner side of the top cover, and a valve is fixedly connected to the bottom of the air intake support frame, with the bottom of the valve supported on the top inner side of the sealing plate.

[0008] As a further description of the above technical solution: the discharge mechanism includes a fixed frame, the bottom of which is fixedly connected to the top of the valve, and one end of the fixed frame is provided with a movable groove;

[0009] As a further description of the above technical solution: the valve body is rotatably connected to the fixed frame on the side away from the movable groove, and the push rod motor is fixedly connected to the valve body on the side away from the valve body.

[0010] As a further description of the above technical solution: the output end of the push rod motor is fixedly connected to a connecting rod, and the connecting rod is slidably connected inside the movable groove;

[0011] As a further description of the above technical solution: a fixed column is fixedly connected to the outside of the connecting rod, that is, near the top of the movable groove, and an arc plate is fixedly connected to the outside of the connecting rod, that is, near the bottom of the movable groove;

[0012] As a further description of the above technical solution: a sealing strip is fixedly connected to the bottom inner side of the valve body, a pipe is threadedly connected to the bottom of the valve body, and the top inner side of the pipe is fixedly connected to the outside of the sealing strip;

[0013] As a further description of the above technical solution: the outer bottom of the threaded rod is slidably connected to the inside of the support column, and the outer side of the limiting block is slidably connected to the inside of the slide rod.

[0014] This utility model has the following beneficial effects:

[0015] 1. In this utility model, the controller drives the wheel to rotate, which causes the push rod motor on the valve body to slide inside the slide rod. The slide rod is controlled to slide and lock in the support column. Through the sealing plate and spring, when the internal and external pressures are unbalanced, the external air pressure causes the slide rod on the sealing plate to squeeze the spring, moving the sealing plate away from the valve and allowing external gas to enter the inside and outside. This changes the negative pressure caused by chemical production, thereby automatically opening the valve when the internal air pressure of the tank decreases, preventing damage to the storage tank caused by excessively low air pressure.

[0016] 2. In this utility model, with the cooperation of the push rod motor and the connecting rod, the fixing frame is driven by the arc plate and the fixing column, which opens and closes the valve around the valve body, so that the pressure in the tank can be quickly released in an emergency. With the cooperation of the valve body and the sealing strip, the connection between the pipe body and the valve body is completely sealed, so as to solve the problem of not being able to quickly open the release device in an emergency. Attached Figure Description

[0017] Figure 1 This is a three-dimensional schematic diagram of a safety relief device for chemical production proposed in this utility model.

[0018] Figure 2 This is a schematic diagram of the sealing strip of a chemical production safety relief device proposed in this utility model;

[0019] Figure 3 This is a schematic diagram of the valve body of a safety relief device for chemical production proposed in this utility model;

[0020] Figure 4 This is a schematic diagram of the valve structure of a safety relief device for chemical production proposed in this utility model;

[0021] Figure 5 for Figure 4 Enlarged view of point A in the middle.

[0022] Legend:

[0023] 1. Top cover; 2. Pressure control mechanism; 201. Controller; 202. Wheel; 203. Threaded rod; 204. Limiting block; 205. Support column; 206. Slide rod; 207. Sealing plate; 208. Spring; 209. Intake support frame; 2010. Valve; 3. Discharge mechanism; 301. Fixing frame; 302. Movable groove; 303. Valve body; 304. Push rod motor; 305. Connecting rod; 306. Arc plate; 307. Fixing column; 308. Sealing strip; 309. Pipe body. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Reference Figure 1 , Figure 4 , Figure 5This utility model provides an embodiment of a safety relief device for chemical production, comprising a top cover 1. The top cover 1 is made of high-strength metal material, possessing good pressure resistance and corrosion resistance to adapt to the complex environmental conditions in chemical production. A pressure control mechanism 2 is installed inside the top cover 1, and a discharge mechanism 3 is installed at the bottom of the pressure control mechanism 2. The pressure control mechanism 2 includes a controller 201, which uses a signal-controlled drive motor to drive a rotating wheel. A sliding groove is provided on one side, and a lifting rail is provided on the other side for following movement. The bottom of the controller 201 is fixedly connected to the top of the top cover 1, and a wheel 202 is fixedly connected to the output end of the controller 201. The device is equipped with a sliding groove structure that matches the controller 201. Under the drive of the controller 201, it can rotate precisely. The bottom of the wheel 202 is fixedly connected to a threaded rod 203. The threaded rod 203 is made of high-strength steel, and the threaded part undergoes a special heat treatment process to enhance its wear resistance and load-bearing capacity. It is a key transmission component for realizing control and adjustment. The external thread of the threaded rod 203 is connected to the inside of the top cover 1. The bottom of the threaded rod 203 is fixedly connected to a limiting block 204, which limits the range of movement. The inner side of the top cover 1 is fixedly connected to a support column 205, which is made of sturdy metal tubing and has holes inside that are suspended at the bottom.

[0026] The support column 205 is internally connected to a sliding rod 206. The sliding rod 206 is made of high-strength solid metal rod with a polished surface. The top is provided with a groove that matches the limiting block 204, allowing the limiting block 204 to slide inside it. The bottom of the sliding rod 206 is fixedly connected to a sealing plate 207. The sealing plate 207 is a key component that directly controls the opening and closing of the air intake channel. It is made of high-strength metal sheet. The sliding rod 206 is externally fitted with a spring 208. The spring 208 plays the role of buffering and resetting. It is made of high-quality steel and has a suitable elastic coefficient. When the internal pressure of the device changes, it can provide a certain buffering force for the sliding rod 206 and the sealing plate 207 to avoid damage due to sudden pressure changes. At the same time, when the pressure returns to normal, the spring 208 can quickly reset the sliding rod 206 and the sealing plate 207 to the initial position and close the air intake channel. The inner side of the top cover 1 is fixedly connected to the air intake assembly.

[0027] The air intake assembly includes an air intake support frame 209, which is made of high-strength metal material and is circular in shape, matching the inner shape of the top cover 1. The top of the air intake support frame 209 is fixedly connected to the inner side of the top cover 1, and a valve 2010 is fixedly connected to the bottom of the air intake support frame 209. The valve 2010 is used to control the gas inlet and outlet and to seal. The bottom of the valve 2010 is supported on the top inner side of the sealing plate 207. The outer bottom of the threaded rod 203 is slidably connected to the inside of the support column 205, and the outer side of the limiting block 204 is slidably connected to the inside of the slide rod 206.

[0028] Reference Figures 1 to 3 The emission mechanism 3 includes a fixed frame 301, which is the supporting frame of the emission mechanism 3. It is made of sturdy metal material and has good strength and corrosion resistance. The bottom of the fixed frame 301 is fixedly connected to the top of the valve 2010. One end of the fixed frame 301 is provided with a movable groove 302. The movable groove 302 is a long strip-shaped groove with fine internal processing and a smooth surface. The valve body 303 is rotatably connected to the side of the fixed frame 301 away from the movable groove 302. The valve body 303 is made of high-strength metal material and has a smooth gas passage inside. The surface of the passage is polished to reduce the resistance of gas flow. The push rod motor 304 is fixedly connected to the side of the valve body 303 away from the valve body 303. The push rod motor 304 is the power source for controlling the rotation of the valve body 303. It adopts a high-performance electric push rod with high-precision position control and large thrust output capability. When the push rod motor 304 receives a control signal, it can accurately extend and shorten the output shaft.

[0029] A connecting rod 305 is fixedly connected to the output end of the push rod motor 304. The connecting rod 305 is made of high-strength metal and is slidably connected inside the movable groove 302. A fixing post 307 is fixedly connected to the outside of the connecting rod 305, near the top of the movable groove 302. The fixing post 307 is a cylindrical metal post, which limits and guides the connecting rod 305 during its sliding process, preventing it from coming off the top of the movable groove 302. An arc plate 306 is fixedly connected to the outside of the connecting rod 305, near the bottom of the movable groove 302. The arc plate 306 is made of high-strength metal sheet and is arc-shaped. Its function is to support the connecting rod... When 305 slides, it contacts the outer surface of valve body 303, pushing valve body 303 to rotate around the rotation axis. A sealing strip 308 is fixedly connected to the inner bottom of valve body 303. The sealing strip 308 is made of high temperature resistant and chemical corrosion resistant rubber material. Its shape matches the bottom opening of valve body 303 and the inner top of pipe body 309. Its function is to provide a good sealing effect when valve body 303 is connected to pipe body 309, preventing gas from leaking from the connection during the discharge process. Pipe body 309 is threadedly connected to the bottom of valve body 303. Pipe body 309 is a pipeline component that guides gas to the discharge position. The inner top of pipe body 309 is fixedly connected to the outside of sealing strip 308.

[0030] Working principle: When no emissions are required during production, the controller 201 drives the motor to rotate the wheel via a signal, which in turn drives the disc 202 to rotate precisely. The disc 202 drives the threaded rod 203 to rotate upward. Since the threaded rod 203 is threadedly connected to the top cover 1 and has a limiting block 204 at the bottom, the limiting block 204 slides upward in the groove inside the slide rod 206, blocking the slide rod 206 and locking the sealing plate 207 to prevent the internal air pressure from changing and automatically opening to release pressure. When automatic pressure release is required, the above operation is repeated. The disc 202 drives the threaded rod 203 to rotate downward, allowing the slide rod 206 to move up and down along the support column 205. When the internal pressure is lower than the external pressure, the gas entering from the outside through the air intake support frame 209 is squeezed onto the sealing plate 207. When the pressure exceeds the force of the spring 208, it causes the slide rod 206 to slide downward inside the support column 205, opening the air intake channel and changing the internal air pressure. When the air pressure is balanced, the spring 208 resets the sealing plate 207 to form a seal.

[0031] When rapid depressurization and emergency release operations are required, an output signal is generated. When the push rod motor 304 receives the control signal, its output shaft extends and retracts, causing the connected rod 305 to slide within the movable groove 302. The fixed column 307 on the connected rod 305 limits and guides its sliding to prevent it from coming off. The arc plate 306 contacts the outer surface of the valve body 303 during sliding, pushing the fixed frame 301 to rotate the valve 2010 around the valve body 303, thereby controlling the opening and closing of the gas passage inside the valve body 303. After use, the push rod motor 304 drives the fixed column 307 downward to lock onto the fixed frame 301, pressing the valve 2010 and the longitudinal valve body 303 to form a seal. The sealing strip 308 seals the gap between the valve body 303 and the pipe body 309.

[0032] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A safety relief device for chemical production, comprising a top cover (1), characterized in that: The inside of the top cover (1) is provided with a pressure control mechanism (2), and the bottom of the pressure control mechanism (2) is provided with a discharge mechanism (3); The control mechanism (2) comprises a controller (201), the bottom of the controller (201) is fixedly connected to the top of the top cover (1), the output end of the controller (201) is fixedly connected with a wheel disc (202), the bottom of the wheel disc (202) is fixedly connected with a threaded rod (203), the outer side of the threaded rod (203) is threadedly connected in the inside of the top cover (1), the bottom of the threaded rod (203) is fixedly connected with a limiting block (204), the inner side of the top cover (1) is fixedly connected with a supporting column (205), the inside of the supporting column (205) is slidably connected with a sliding rod (206), the bottom of the sliding rod (206) is fixedly connected with a sealing plate (207), the outside of the sliding rod (206) is sleeved with a spring (208), and the inner side of the top cover (1) is fixedly connected with an air inlet assembly.

2. The safety relief device for chemical production according to claim 1, characterized in that: The air inlet assembly comprises an air inlet supporting frame (209), the top of the air inlet supporting frame (209) is fixedly connected to the inner side of the top cover (1), and the bottom of the air inlet supporting frame (209) is fixedly connected with a valve (2010).

3. The chemical production safety relief device of claim 2, wherein: The bottom of the fixed frame (301) is fixedly connected to the top of the valve (2010), and one end of the fixed frame (301) is provided with a movable groove (302).

4. The chemical production safety relief device of claim 3, wherein: The side of the fixed frame (301) away from the movable groove (302) is rotatably connected with a valve body (303), and the side of the valve body (303) away from the valve body (303) is fixedly connected with a push rod motor (304).

5. A safety relief device for chemical production according to claim 4, characterized in that: The output end of the push rod motor (304) is fixedly connected with a connecting rod (305), and the connecting rod (305) is slidably connected in the inside of the movable groove (302).

6. A safety relief device for chemical production according to claim 5, characterized in that: The outside of the connecting rod (305), close to the top of the movable groove (302), is fixedly connected with a fixed column (307), and the outside of the connecting rod (305), close to the bottom of the movable groove (302), is fixedly connected with an arc plate (306).

7. The chemical production safety relief device of claim 4, wherein: The bottom inner side of the valve body (303) is fixedly connected with a sealing strip (308), the bottom of the valve body (303) is threadedly connected with a pipe body (309), and the top inner side of the pipe body (309) is fixedly connected to the outside of the sealing strip (308).

8. The chemical production safety relief device of claim 1, wherein: The outer bottom side of the threaded rod (203) is slidably connected in the inside of the supporting column (205), and the outside of the limiting block (204) is slidably connected in the inside of the sliding rod (206).

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